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Quadratic Mixed Convection Stagnation-Point Flow in Hydromagnetic Casson Nanofluid over a Nonlinear Stretching Sheet with Variable Thermal Conductivity

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Abstract:

An analysis of nonlinear mixed convection transport of hydromagnetic Casson nanofluid over a nonlinear stretching sheet near a stagnation point is deliberated in this study. The flow is confined in a porous device in the presence of thermophoresis, Ohmic heating, non-uniform heat source with temperature-dependent thermal conductivity associated with haphazard motion of tiny particles. The transport equations are translated from nonlinear partial differential equations into ordinary ones via similarity transformation technique and subsequently tackled with shooting method coupled with Runge-Kutta Fehlberg algorithm. The significant contributions of the embedded parameters on the dimensionless quantities are graphically depicted and deliberated while the numerical results strongly agree with related published studies in the limiting conditions. It is found that a rise in the magnitude of Casson fluid parameter decelerates the fluid flow while enhancing the viscous drag and thermal profiles. The inclusion of the nonlinear convection term aids fluid flow whereas heat transfer reduces with growth in the thermophoresis and Brownian motion terms.

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Periodical:

Defect and Diffusion Forum (Volume 409)

Pages:

95-109

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.409.95

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Online since:

May 2021

Authors:

Ephesus Olusoji Fatunmbi, Samuel Segun Okoya*

Keywords:

Mixed Convection, Nonlinear Stretching Sheet, Reactive Casson Nanofluid, Stagnation-Point, Thermophoresis

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© 2021 Trans Tech Publications Ltd. All Rights Reserved

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